Customers flying to or from Germany will only find out if their flight is cancelled at the last minute

The pilots want more of their income to be fixed, with a smaller portion of their wage depending on the amount of hours they fly.

The union has given Ryanair until August 6 to negotiate.

The Local reports that Janis George Schmitt from union Vereinigung Cockpit said yesterday that he expected a "big vote for yes" when it comes to going on strike.

Ryanair customers were yesterday experiencing delays due to French and German air traffic control shortages.

The news comes as Irish pilots go on strike again this Friday over holiday and working conditions.

A Ryanair spokesperson said: “We have written to the VC today (July 30) and invited them to another meeting next week. We hope we can make further progress in concluding a collective labour agreement with our pilots in Germany.”

Sun Online Travel contacted Ryanair for comment and we were referred to its latest statement about the delays on Twitter.

The airline suffered delays and cancellations last weekend because of the bad weather.

Thunderstorms coupled with strikes in several European countries led to scores of flights being cancelled on Friday night and Saturday, as "knock-on" disruption continued to be felt on Sunday.

Dozens of cancellations on Saturday left more than 15,000 travellers on Ryanair stranded, with the budget airline telling holidaymakers to leave Stansted airport and use the website to rebook flights.

The statement reads: “French and German ATC staff shortages have caused delays to 62 (14 per cent) of 443 first wave of flight departures this morning."

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It continued: “We sincerely regret these unjustified delays and are doing our utmost to limit their impact on flights throughout the rest of the day. Customers on impacted flights have been notified by text and email.”

A Ryanair spokesperson said: "There is a very small number of delays and cancellations as a knock-on effect from the extreme weather disruptions (Fri) and the disruptions arising from ATC staff shortages in the UK, France and Germany."

Sun Online Travel previously revealed if passengers are able to claim compensation for flights cancelled during the Ryanair strikes.